Reads incoming serial data. read() inherits from the Stream utility class.
Serial.read()
Arduino Mega only:
Serial1.read()
Serial2.read()
Serial3.read()
Nothing
The first byte of incoming serial data available (or -1 if no data is available) - int.
int incomingByte = 0; // for incoming serial data
void setup() {
Serial.begin(9600); // opens serial port, sets data rate to 9600 bps
}
void loop() {
// send data only when you receive data:
if (Serial.available() > 0) {
// read the incoming byte:
incomingByte = Serial.read();
// say what you got:
Serial.print("I received: ");
Serial.println(incomingByte, DEC);
}
}